When dealing with a dual purpose fund there are two types of shares involved: capital shares  and income shares . Capital  shares entitle the owner to capital value in the stock, but none of the income . Income shares offer the opposite – income without capital, and are considered safe, if unexciting.
Capital shares are primarily sought by investors who are involved in aggressive investment strategies. They want to see capital growth in the stocks or funds they purchase. Profits can only be made if the stocks increase in price. Ideally an investor will get in on the ground floor of an upwardly moving stock.
Investors seeking such growth will invest mainly in equities. The percentage of equities purchased will depend upon how long the investor has before retirement. The individual’s investment horizon, goals, tolerance for risk and financial situation will determine how aggressively the portfolio is designed. This kind of portfolio would be involved in a capital growth strategy.
In a capital growth portfolio one can expect to find that up to 70% of the funds are equities, 20-25% will be fixed income  securities , and the rest will be divided between money markets or cash. This distribution offers some security  against sudden market drops. Very aggressive investors may bypass alternatives entirely, investing solely in equities.
The goal of such an investment strategy is to maximize capital appreciation. This will increase the value of the portfolio more rapidly, and can be very profitable over time, if the right funds are selected, but the risk is measurably higher as well.